Configuring Sonoff ZBRBS as venetian blind

I want to automate our shutters that have a single motor that both controls tilt and lift (I think this is called venetian blinds).

I have both tried a Sonoff ZBRBS and Nodon SIN-4-RS-20 but both don’t really do what I expect them to do. I see that the I can set the window covering type to WindowCoveringType.Tilt_blind_tilt_and_lift which suceeds but reading the value back always returns Rollershade.

Did anyone manage to configure those correctly?